I tread a careful line between working with the Nationalists and helping them defeat/encircle the japanese, but also letting them taking a reasonable amount of damage in the war, so they won't steam roll me afterwards, but at the end of the war it's always impossible for me to get a significant amount of warscore to get manchuria, and right after I get steamrolled by 150+ divisions if I try to fight the nationalists. I usually have 40+ good divisions after I get the 'communism advances' event. Are there other events to help beat the nationalists?